arnold0523

As many of you know, the C class with later build dates should have acoustic glass on front to keep the wind noise down (refer to this link for wind noise issue)https://mbworld.org/forums/c-class-w...-bulletin.html

I have checked several cars on the lot from a local dealer. Some of the latest built cars no longer have acoustic glass on the front. But they do have new window felts installed (as other people had mentioned MB was working on a global solution to fix the rattles on the window/door), btw this kind of felt was implemented to China market about a year ago as people complain a lot about the rattles.

No Acoustic glass, but comes with new window felts.
S/Ns ending in 168292, 171687.

No Acoustic glass, possibly new windows felts (couldn't check as door was locked)
S/Ns ending in 171519, 164051.

Acoustic glass installed, no new felts.
S/N ending in 167828.

From evidence above, it's safe to conclude from now on, the new cars will not come with acoustic glass but will come with new window felts.

I have checked my C43 order, the code SA851 (code for acoustic glass) is not showing up and I assume it no longer is standard. a couple of weeks ago, when I checked the dealer ordering guide for 2017 W205s, code 851 was there (not sure though).

DapperStyle

Unfortunate to hear. I'm sure the Acoustic Glass was costing them much more than some .03 cent felt. Hopefully it is enough to keep the noise/wind out.

jumpman726

Yeah, I agree with Dapper. The additional cost for standard acoustic glass probably didn't make sense for Mercedes. On the new E-Class they are charging around $1,100 for a package that includes acoustic glass, thicker carpeting, and better sound insulation in certain parts of the car. I'm sure they'll offer an optional package like that on the C-Class in the future.

DapperStyle

Just looked up the acoustic package you were referring to. MB is trying to get their money's worth out of E Class buyers, just to get the digital dash you need to option out a Premium 3 package, insane.

arnold0523

agree, that dual screens are nice, but only comes with premium 3 package which costs something like 10k+.

The acoustic glass on C class: I heard from other people it's $30 more expensive than normal glass per piece - if it's just that, I personally would pay for it. but who knows.

I have acoustic glass retrofitted into my current C300 as they tried to fix the wind noise issue. But I am getting a C43 soon.

Could it be possible that the dealer is willing to swap those windows for me as technically at that time both cars would be under my name before I handed in the keys to them. Of course I want them to do it for free though.. maybe as a throw in from the new car. It is very unlikely anyone has done it before.

JBMCL

Are you saying just MY17 cars don't have acoustic glass or late MY16 cars as well?

arnold0523

Late MY16 as well. SN is the order it's produced so it doesn't have to be MY17

JBMCL

So how can you tell if you have acoustic glass or not?

z28lt1

It's multilayer with air in between. Easy to tell from the edge. Picture courtesy of ManiacGT:

Jdem22

It is $11,250 I believe!!

Mike5215

It's a $1k option on top of the $11k P3! Crazy. For what is essentially a swollen C Class with the same T4? Yikes. I saw a new E on the road at a light for the first time recently and it took awhile for me to realize it wasn't a 205. They're really close. It wasn't until I realized the wheel style wasn't a 205's that it dawned on me. To option one out with the glass dash was over $70k. C63 money.

DapperStyle

They are really close from the rear but the E has better proportions. That said, they are nuts for having the same engine as the C, if they truly wanted to leapfrog BMW or Audi they would've tried to make the digital dash an easy option instead of bundling it with the 11k P3 package. Bundling it this way I bet very few cars will have it and barely any dealer will stock any E's with P3/DD for leases.

foxberry

Just checked my 1/16 build - I do have the acoustic glass.

ManiacGT

Actually.. That's my car/photo after the windows were upgraded.

arnold0523

1/16 is early than this discussion. I was refering to somewhere like July/Aug 2016 build, which is relatively late. I think they got rid of the glass.

Anyway, it's good for you to have it.

Iggier

My 3/16 build (bought it one month ago) has the acoustic glass. Cannot imagine how noisy this beast would be without it! I do not experience wind noise per se, but at highway speeds passing vehicles generate a wind-noise vortex-sounding thing in their wake. Very annoying.

foxberry

Whoops...sorry!

flagman

My mid May build does not have the double glass shown in the photo.

arnold0523

Not sure about Canada though...
But in the U.S., May 2016 should probably come with the Acoustic glass.

z28lt1

Thanks for sharing the photo, I'll update my post.

Gungaslow

Apparently acoustic glass has made a comeback again..they can't decide if it's coming or going..no real explanation though

NYbenzzz

man, you guys made me run downstairs and check on my feb 2016 built c300.

i do in fact have the acoustic glass, phew!

Nc11

Perhaps a silly question, but how can you tell when\where s particular vehicle was built? I've recieved mine couple from days ago, so assuming MY17, and the wind noise is very annoying.

StanNH

I recently had the acoustic glass installed on my 2015 C300. The dealer installed both the front acoustic glass panes plus the felt insulation on all four doors. All work was done under warranty with no cost to me.

Gungaslow

Usually on the driver door jamb there is a black sticker with the vin #, date, paint code, barcode, etc... it won't give you the exact date but it will give you the month and year it was made.. example = 9/16.....usually located at the top right corner of the sticker